Preheat the oven to 350°F (180°C) and line a baking sheet with parchment paper.
In a small bowl, combine the ground flaxseeds with water and let it sit for a few minutes to thicken.
In a large mixing bowl, whisk together the flour, baking soda, and salt.
In another bowl, mix the melted coconut oil, brown sugar, cane sugar, vanilla extract, and flaxseed mixture until well combined.
Gradually add the dry ingredients to the wet ingredients, stirring until just combined.
Fold in the vegan chocolate chips.
Scoop tablespoon-sized amounts of dough onto the prepared baking sheet, leaving enough space between each cookie.
Bake for 10-12 minutes, or until the cookies are lightly golden on the edges.
Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.